package com.dengjunbo.eduservice.listener;

import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.dengjunbo.eduservice.entity.EduSubject;
import com.dengjunbo.eduservice.entity.excel.SubjectData;
import com.dengjunbo.eduservice.service.EduSubjectService;
import com.dengjunbo.servicebase.exceptionhanler.GuliException;

/**
 * @author dengjunbo
 * @date 2020/4/21-10:56
 */
public class SubjectExcelListener extends AnalysisEventListener<SubjectData> {
//    因为SubjectExcelListener不能交给spring去管理，需要自己new，不能注入其他对象
//    不能实现数据库操作
    public EduSubjectService subjectService;
    public SubjectExcelListener( ) {

    }
    public SubjectExcelListener(EduSubjectService subjectService) {
        this.subjectService = subjectService;
    }

    @Override
    public void invoke(SubjectData subjectData, AnalysisContext analysisContext) {
    if (subjectData == null){
        throw new GuliException(20001,"文件数据为空");
    }
        EduSubject existOneSubject = this.existOneSubject(subjectService, subjectData.getOneSubjectName());
    if(existOneSubject == null){
        //没有相同一级目录，进行添加
        existOneSubject =new EduSubject();
        existOneSubject.setParentId("0");
        existOneSubject.setTitle(subjectData.getOneSubjectName());

        subjectService.save(existOneSubject);

    }
    //获取一级分类id值
        String pid =existOneSubject.getId();
        EduSubject existTwoSubject = this.existTwoSubject(subjectService, subjectData.getTwoSubjectName(), pid);
    if(existTwoSubject == null){
        existTwoSubject = new EduSubject();
        existTwoSubject.setParentId(pid);
        existTwoSubject.setTitle(subjectData.getTwoSubjectName());
        subjectService.save(existTwoSubject);
        }
    }

//    判断一级分类数据不能重复添加
    private EduSubject existOneSubject(EduSubjectService eduSubjectService,String name){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("title",name);
        wrapper.eq("parent_id","0");
        EduSubject subject = subjectService.getOne(wrapper);
        return subject;
    }
    //    判断二级分类数据不能重复添加
    private EduSubject existTwoSubject(EduSubjectService eduSubjectService,String name,String pid){
        QueryWrapper<EduSubject> wrapper = new QueryWrapper<>();
        wrapper.eq("title",name);
        wrapper.eq("parent_id",pid);
        EduSubject subject = subjectService.getOne(wrapper);
        return subject;
    }

    @Override
    public void doAfterAllAnalysed(AnalysisContext analysisContext) {

    }
}
